Home / 89,731.20-123,828.48-49,445.28

Finding the Fourth Proportional to 89,731.20, 123,828.48 and 49,445.28

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Solution

The fourth proportional to 89,731.20, 123,828.48 and 49,445.28 is: 68,234.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,731.20 : 123,828.48 = 49,445.28 : x
  2. Step 2: Convert to fraction form
    89,731.20/123,828.48 = 49,445.28/x
  3. Step 3: Cross multiply
    89,731.20x = 123,828.48 × 49,445.28
  4. Step 4: Simplify right side
    89,731.20x = 6,122,733,865.57
  5. Step 5: Solve for x
    x = 6,122,733,865.57/89,731.20
  6. Step 6: Final answer
    x = 68,234.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.